34
38
windowpane_mode = false;
35
39
server_started = false;
39
41
/* Starts the console server, if it isn't already.
40
42
* This can be called any number of times - it only starts the one server.
41
* Note that this is asynchronous. It will return after signalling to start
42
* the server, but there is no guarantee that it has been started yet.
43
43
* This is a separate step from console_init, as the server is only to be
44
44
* started once the first command is entered.
45
45
* Does not return a value. Writes to global variables
46
* server_host, and server_port.
48
* \param callback Function which will be called after the server has been
49
* started. No parameters are passed. May be null.
46
* server_host, server_port, server_magic.
51
function start_server(callback)
48
function start_server()
58
var callback1 = function(xhr)
60
var json_text = xhr.responseText;
61
server_key = JSON.parse(json_text).key;
62
server_started = true;
68
if((typeof(current_path) != 'undefined') && current_file)
70
// We have a current_path - give a suggestion to the server
72
if (current_file.isdir)
75
path = path_join("/home", current_path);
79
// Editor - need to chop off filename
80
var tmp_path = current_path.split('/');
82
path = path_join("/home", tmp_path.join('/'));
84
ajax_call(callback1, "console", "service", {"ivle.op": "start", "cwd": path}, "POST");
88
// No current_path - let the server decide
89
ajax_call(callback1, "console", "service", {"ivle.op": "start"}, "POST");
50
if (server_started) return;
51
var xhr = ajax_call("consoleservice", "start", {}, "POST");
52
var json_text = xhr.responseText;
53
var server_info = JSON.parse(json_text);
54
server_host = server_info.host;
55
server_port = server_info.port;
56
server_magic = server_info.magic;
57
server_started = true;
93
60
/** Initialises the console. All apps which import console are required to
231
205
var hist = new History();
233
function set_interrupt()
238
function clear_output()
240
var output = document.getElementById("console_output");
241
while (output.firstChild)
243
output.removeChild(output.firstChild);
247
207
/** Send a line of text to the Python server, wait for its return, and react
248
208
* to its response by writing to the output box.
249
209
* Also maximize the console window if not already.
251
function console_enter_line(inputbox, which)
255
if (typeof(inputbox) == "string")
257
var inputline = inputbox + "\n";
262
/* Disable the text box */
263
inputbox.setAttribute("disabled", "disabled");
265
var inputline = inputbox.value + "\n";
267
var output = document.getElementById("console_output");
270
var span = document.createElement("span");
271
span.setAttribute("class", "inputPrompt");
272
span.appendChild(document.createTextNode(
273
document.getElementById("console_prompt").firstChild.nodeValue)
275
output.appendChild(span);
276
// Print input line itself in a span
277
var span = document.createElement("span");
278
span.setAttribute("class", "inputMsg");
279
span.appendChild(document.createTextNode(inputline));
280
output.appendChild(span);
282
var args = {"ivle.op": "chat", "kind": which, "key": server_key, "text":inputline};
283
var callback = function(xhr)
285
console_response(inputbox, inputline, xhr.responseText);
287
ajax_call(callback, "console", "service", args, "POST");
290
function console_response(inputbox, inputline, responseText)
294
var res = JSON.parse(responseText);
298
alert("An internal error occurred in the python console.");
301
var output = document.getElementById("console_output");
211
function console_enter_line(inputline, which)
213
/* Start the server if it hasn't already been started */
215
var digest = hex_md5(inputline + server_magic);
216
var args = {"host": server_host, "port": server_port,
217
"digest":digest, "text":inputline};
218
var xmlhttp = ajax_call("consoleservice", which, args, "POST");
220
var res = JSON.parse(xmlhttp.responseText);
221
var output = document.getElementById("console_output");
223
var pre = document.createElement("pre");
224
pre.setAttribute("class", "inputMsg");
225
pre.appendChild(document.createTextNode(inputline + "\n"));
226
output.appendChild(pre);
302
228
if (res.hasOwnProperty('okay'))
231
// print out the output (res.okay[0])
232
var pre = document.createElement("pre");
233
pre.setAttribute("class", "outputMsg");
234
pre.appendChild(document.createTextNode(res.okay[0]));
235
output.appendChild(pre);
236
// print out the return value (res.okay[1])
307
output.appendChild(document.createTextNode(res.okay + "\n"));
308
output.appendChild(span);
239
var pre = document.createElement("pre");
240
pre.setAttribute("class", "outputMsg");
241
pre.appendChild(document.createTextNode(res.okay[1] + "\n"));
242
output.appendChild(pre);
310
244
// set the prompt to >>>
245
var prompt = document.getElementById("console_prompt");
246
prompt.replaceChild(document.createTextNode(">>> "), prompt.firstChild);
313
248
else if (res.hasOwnProperty('exc'))
251
// print out any output that came before the error
252
if (res.exc[0].length > 0)
254
var pre = document.createElement("pre");
255
pre.setAttribute("class", "outputMsg");
256
pre.appendChild(document.createTextNode(res.exc[0]));
257
output.appendChild(pre);
316
260
// print out the error message (res.exc)
317
print_error(res.exc);
319
// set the prompt to >>>
322
else if (res.hasOwnProperty('restart') && res.hasOwnProperty('key'))
324
// Server has indicated that the console should be restarted
326
// Get the new key (host, port, magic)
327
server_key = res.key;
329
// Print a reason to explain why we'd do such a horrible thing
330
// (console timeout, server error etc.)
331
print_error("Console Restart: " + res.restart);
333
// set the prompt to >>>
261
var pre = document.createElement("pre");
262
pre.setAttribute("class", "errorMsg");
263
pre.appendChild(document.createTextNode(res.exc[1]));
264
output.appendChild(pre);
336
266
else if (res.hasOwnProperty('more'))
338
268
// Need more input, so set the prompt to ...
341
else if (res.hasOwnProperty('output'))
343
if (res.output.length > 0)
345
output.appendChild(document.createTextNode(res.output));
347
var callback = function(xhr)
349
console_response(inputbox, null, xhr.responseText);
353
var kind = "interrupt";
359
var args = {"ivle.op": "chat", "kind": kind, "key": server_key, "text":''};
360
ajax_call(callback, "console", "service", args, "POST");
362
// Open up the console so we can see the output
363
// FIXME: do we need to maximize here?
367
divScroll.activeScroll();
369
// Return early, so we don't re-enable the input box.
269
var prompt = document.getElementById("console_prompt");
270
prompt.replaceChild(document.createTextNode("... "), prompt.firstChild);
374
273
// assert res.hasOwnProperty('input')
378
if (inputbox != null)
380
/* Re-enable the text box */
381
inputbox.removeAttribute("disabled");
274
var prompt = document.getElementById("console_prompt");
275
prompt.replaceChild(document.createTextNode("+++ "), prompt.firstChild);
385
277
/* Open up the console so we can see the output */
386
278
console_maximize();
388
divScroll.activeScroll();
390
// Focus the input box by default
391
document.getElementById("console_output").focus();
392
document.getElementById("console_inputText").focus();
395
281
function catch_input(key)
429
315
case 13: /* Enter key */
430
var callback = function()
432
/* Send the line of text to the server */
433
console_enter_line(inp, "chat");
434
hist.submit(inp.value);
435
inp.value = hist.curr();
437
/* Start the server if it hasn't already been started */
438
start_server(callback);
316
/* Send the line of text to the server */
317
console_enter_line(inp.value, "chat");
318
hist.submit(inp.value);
319
inp.value = hist.curr();
440
321
case 38: /* Up arrow */
441
322
hist.up(inp.value);
442
323
inp.value = hist.curr();
443
/* Inhibit further responses to this event, or WebKit moves the
444
* cursor to the start. */
447
325
case 40: /* Down arrow */
448
326
hist.down(inp.value);
449
327
inp.value = hist.curr();
455
/** Resets the console by signalling the old console to expire and starting a
458
function console_reset()
460
// FIXME: We show some feedback here - either disable input or at very
461
// least the reset button.
463
// Restart the console
470
xhr = ajax_call(null, "console", "service", {"ivle.op": "chat", "kind": "terminate", "key": server_key}, "POST");
471
console_response(null, null, xhr.responseText);
475
/** Prints an error line in the console **/
476
function print_error(error)
478
var output = document.getElementById("console_output");
481
var span = document.createElement("span");
482
span.setAttribute("class", "errorMsg");
483
span.appendChild(document.createTextNode(error + "\n"));
484
output.appendChild(span);
487
divScroll.activeScroll();
490
/** Sets the prompt text **/
491
function set_prompt(prompt_text)
493
var prompt = document.getElementById("console_prompt");
494
prompt.replaceChild(document.createTextNode(prompt_text + " "), prompt.firstChild);
497
/**** Following Code modified from ******************************************/
498
/**** http://radio.javaranch.com/pascarello/2006/08/17/1155837038219.html ***/
499
/****************************************************************************/
500
var chatscroll = new Object();
502
chatscroll.Pane = function(scrollContainerId)
504
this.scrollContainerId = scrollContainerId;
507
chatscroll.Pane.prototype.activeScroll = function()
509
var scrollDiv = document.getElementById(this.scrollContainerId);
510
var currentHeight = 0;
512
if (scrollDiv.scrollHeight > 0)
513
currentHeight = scrollDiv.scrollHeight;
514
else if (scrollDiv.offsetHeight > 0)
515
currentHeight = scrollDiv.offsetHeight;
517
scrollDiv.scrollTop = currentHeight;
522
var divScroll = new chatscroll.Pane('console_output');